Collapsible headphone



FIG. 1 is a top plan view and a bottom plan view of a collapsible headphone showing our new design;

FIG. 2 is a side elevational view thereof;

FIG. 3 is an opposite side elevational view thereof;

FIG. 4 is a perspective view thereof;

FIG. 5 is a perspective view in an alternate open position thereof;

FIG. 6 is a perspective view on an alternate open position thereof; and,

FIG. 7 is a perspective view in an alternate position. 

The ornamental design for a collapsible headphone, as shown and described. 